The "Young and Beautiful" singer also confirmed that it's location 100% has ulterior motives.
She double downed in the comments, "It's. Personal."
The billboard was only a means to add insult to injury, earlier this month, Del Rey announced the title track of her album and revealed the date her album would be dropping on Larkin’s birthday, Dec. 7.
Dedicated fans were quick to comment on her latest act of revenge.
"The fact that Lana Del Rey only put up a billboard in her ex's town is the amount of petty I strive for," one fan tweeted.
Another referenced her relationship with her "Snow on the beach" collaborator, "Lana Del Rey placing the only billboard to promote her album in Tulsa, Oklahoma (her ex's hometown) is the level of shady I aspire to be. Taylor Swift taught her well."
A different user commented: "Lana Del Rey putting her ONLY billboard in her ex's city is so me."
Del Rey and Larkin dated for six-months before pulling the plug due to their respective "busy schedules" in 2020. The former couple would split their time between Los Angeles and Tulsa where Larkin worked as a police officer until he retired last year.